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A074367 (p^2-5)/4 for odd primes p. 0

%I #8 Jan 15 2019 14:26:09

%S 1,5,11,29,41,71,89,131,209,239,341,419,461,551,701,869,929,1121,1259,

%T 1331,1559,1721,1979,2351,2549,2651,2861,2969,3191,4031,4289,4691,

%U 4829,5549,5699,6161,6641,6971,7481,8009,8189,9119,9311,9701,9899,11129

%N (p^2-5)/4 for odd primes p.

%t a[n_] := (Prime[n+1]^2-5)/4

%t (#^2-5)/4&/@Prime[Range[2,50]] (* _Harvey P. Dale_, Jan 15 2019 *)

%Y a(n) = A024701(n)-1.

%K nonn,easy

%O 1,2

%A _Roger L. Bagula_, Sep 23 2002

%E Edited by _Dean Hickerson_, Oct 09 2002

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)